<template>
  <div class="goods-tabs">
    <nav>
      <a
        :class="{ active: activeName === 'Detail' }"
        href="javascript:;"
        @click="switchTab('Detail')"
      >商品详情</a>
      <a
        href="javascript:;"
        @click="switchTab('Comment')"
        :class="{ active: activeName === 'Comment' }"
      >
        商品评价
        <span>({{ goods.commentCount }})</span>
      </a>
    </nav>
    <!-- 这个位置显示对应的组件 GoodsDetail 或者 GoodsComment -->
    <component :is="'Goods' + activeName"></component>
  </div>
</template>

<script>
import { inject, ref } from "vue"
import GoodsDetail from "./goods-detail.vue"
import GoodsComment from "./goods-comment.vue"

export default {
  name: "GoodsTabs",
  setup(props) {
    const goods = inject('goods')
    const activeName = ref("Detail");
    const switchTab = name => {
      activeName.value = name;
    };
    return {
      activeName,
      switchTab,
      goods
    };
  },
  components: { GoodsDetail, GoodsComment }
}
</script>


<style lang="less" scoped>
.goods-tabs {
  min-height: 600px;
  background: #fff;
  nav {
    height: 70px;
    line-height: 70px;
    display: flex;
    border-bottom: 1px solid #f5f5f5;
    a {
      padding: 0 40px;
      font-size: 18px;
      position: relative;
      > span {
        color: @priceColor;
        font-size: 16px;
        margin-left: 10px;
      }
      &:first-child {
        border-right: 1px solid #f5f5f5;
      }
      &.active {
        &::before {
          content: "";
          position: absolute;
          left: 40px;
          bottom: -1px;
          width: 72px;
          height: 2px;
          background: @xtxColor;
        }
      }
    }
  }
}
</style>